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Finding the Fourth Proportional to 627,353.28, 865,751.04 and 340,875.72

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Solution

The fourth proportional to 627,353.28, 865,751.04 and 340,875.72 is: 470,410.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,353.28 : 865,751.04 = 340,875.72 : x
  2. Step 2: Convert to fraction form
    627,353.28/865,751.04 = 340,875.72/x
  3. Step 3: Cross multiply
    627,353.28x = 865,751.04 × 340,875.72
  4. Step 4: Simplify right side
    627,353.28x = 295,113,509,100.75
  5. Step 5: Solve for x
    x = 295,113,509,100.75/627,353.28
  6. Step 6: Final answer
    x = 470,410.40

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.